Unitary post stiffener



FIG. 1 is a front right perspective view of an unitary post stiffener;

FIG. 2 is a top plan view thereof, a bottom plan view being a mirrorimage; and,

FIG. 3 is a front side elevation view thereof, a rear side, right side,and left side elevation view being a mirror image.

The ornamental design for an unitary post stiffener, as shown anddescribed.